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HomeMy WebLinkAboutNC0021717_Authorization to Construct_20180622 (3)ACIOD Permit No. NCO021717 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, the Town of Wilkesboro is hereby authorized to discharge wastewater from a facility located at the Wilkesboro Wastewater Treatment Plant 700 Snyder Street Wilkesboro Wilkes County to receiving waters designated as the Yadkin River in the Yadkin -Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, 111, and IV hereof. This permit shall become effective February 1, 2016. This permit and authorization to discharge shall expire at midnight on September 30, 2019. Signed this day December 21, 2015. S. Jay Zimmerman, P.G. Director, Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 11 Permit No. NCO021717 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. Town of Wilkesboro is hereby authorized to: 1. Continue to operate 4.9 MGD wastewater treatment facility consisting of: • Influent lift station • Aerated equalization basin • Aeration basin • Clarifiers • Aerated digester • Ultraviolet disinfection • Sludge drying beds • Sludge screw press • Flow measurement Located at the Wilkesboro Wastewater Treatment Plant at 700 Snyder Street, Wilkesboro, Wilkes County; and 2. After receiving an Authorization to Construct permit from the Division, construct wastewater treatment facilities not to exceed 6.6 MGD design flow. 3. Discharge from said treatment works at the location specified on the attached map into the Yadkin River, a class C water in the Yadkin -Pee Dee River Basin. Page 2of11 Permit No. NCO021717 Part I A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (4.9 MGD) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Beginning on the effective date of this permit and lasting until expansion above 4.9 MGD, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: PARAMETER EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Measurement Frequency Sample Type Sample Location 1 Flow 4.90 MGD Continuous Recording Influent or Effluent BODS, 20°C2 30.0 mg/L 45.0 mg/L Daily Composite Influent, Effluent Total Suspended Solids2 30.0 mg/L 45.0 mg/L Daily Composite Influent, Effluent NH3 as N (April 1 -October 31) 21.0 mg/L 35.0 mg/L Daily Composite Effluent NH3 as N (November 1 -March 31) Daily Composite Effluent Fecal Coliform 200/100 mL 400/100 mL Daily Grab Effluent Dissolved Oxygen Daily Grab Effluent Iemperature, °C Daily Grab Effluent pH Between 6.0 and 9.0 s.u. Daily Grab Effluent Oil and Grease 30.0 mg/L 45.0 mg/L Monthly Grab Effluent Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite Effluent Total Phosphorus Monthly Composite Effluent Chronic Toxicity, Quarterly Composite Effluent Dissolved Oxygen4 Footnote 4 Grab U & D Temperature Footnote 4 Grab U & D Conductivity Footnote 4 Grab U & D Effluent Pollutant Scans Monitor and report Footnote 5 Footnote 5 Effluent Footnotes: 1. U: upstream at the bridge between North Wilkesboro and Wilkesboro. D: downstream 100 yards below the outfall. 2. The monthly average effluent BODS and total suspended solids concentrations shall not exceed 15% of their respective influent value (85% removal). 3. Chronic Toxicity (Ceriodaphnia) P/F @ 3.7%; tests shall be conducted in March, June, September and December. See Special Condition A. (3). Page 3 of 11 Permit No. N00021717 4. Samples shall be collected three times per week during the months of June, July, August and September and once per week during the remainder of the year. Instream monitoring requirements are waived as long as the Permittee maintains membership in the Yadkin -Pee Dee River Basin Association (YPDRBA). If the Permittee ceases membership, then all instream monitoring requirements specified in this permit are immediately reinstated. 5. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special Condition A. (4). 6. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports electronically using NC DWR's eDMR application system. See Special Condition A. (7). There shall be no discharge of floating solids or visible foam in other than trace amounts. Page 4 of 11 Permit No. Na0021717 A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (6.6 MGD) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] During the period beginning upon expansion above 4.9 MGD flow and lasting until expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: PARAMETER EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Measurement Fre uenc Sample Type Sample Location 1 Flow 6.6 MGD Continuous Recording Influent or Effluent BODS, 20°C2 30.0 mg/L 45.0 mg/L Daily Composite Influent, Effluent Total Suspended Solids 30.0 mg/L 45.0 mg/L Daily Composite Influent, Effluent NH3 as N (April 1 -October 31) 16.0 mg/L 24.0 mg/L Daily Composite Effluent NH3 as N (November 1 -March 31) Daily Composite Effluent Fecal Coliform 200/100 ml 400/100 ml Daily Grab Effluent Dissolved Oxygen Daily Grab Effluent Temperature, °C Daily Grab Effluent pH Between 6.0 and 9.0 s.u. Daily Grab Effluent Oil and Grease 30.0 mg/L 45.0 mg/L Monthly Grab Effluent Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite Effluent Total Phosphorus Monthly Composite Effluent Chronic Toxicity3 Quarterly Composite Effluent Dissolved Oxygen4 Footnote 4 Grab U & D Temperature Footnote 4 Grab U & D Conductivity Footnote 4 Grab U & D Effluent Pollutant Scans Monitor and Report Footnote 5 Footnote 5 Effluent Footnotes: 1. U: upstream at the bridge between North Wilkesboro and Wilkesboro. D: downstream 100 yards below the outfall. 2. The monthly average effluent BODS and total suspended solids concentrations shall not exceed 15% of their respective influent value (85% removal). 3. Chronic Toxicity (Ceriodaphnia) P/F @ 5.0%; tests shall be conducted March, June, September and December. See Special Condition A. (3). 4. Samples shall be collected three times per week during the months of June, July, August and September and once per week during the remainder of the year. Instream monitoring requirements are waived as Page 5of11 Permit No. NOD021717 long as the Permittee maintains membership in the Yadkin -Pee Dee River Basin Association (YPDRBA). If the Permittee ceases membership, then all instream monitoring requirements specified in this permit are immediately reinstated. 5. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special Condition A. (4). 6. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports electronically using NC DWR's eDMR application system. See Special Condition A. (7). There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (3) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) [15A NCAC 0213 .0200 et seq.] The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 3.7% at 4.9 MGD and 5.0% at 6.6 MGD. _ The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be performed during the months of March, June, September, and December. These months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -December 2010) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR -1) for the months in which tests were performed, using the parameter code TGP313 for the pass/fail results and THP313 for the Chronic Value. Additionally, DWR Form AT -3 (original) is to be sent to the following address: Attention: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1623 Mail Service Center Raleigh, NC 27699-1623 Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Page 6of11 Permit No. NCO021717 Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter, which is the three month time interval that begins on the first day of the month in which toxicity testing is required by this permit and continues until the final day of the third month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. A. (4) EFFLUENT POLLUTANT SCAN [G.S. 143-215.1(b)] The permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan must be performed in each of the following years: 2016, 2017, and 2018. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable." Ammonia (as N) Chlorine (total residual, TRC) Dissolved oxygen Nitrate/Nitrite Kjeldahl nitrogen Oil and grease Phosphorus Total dissolved solids Hardness Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Trans-1,2-dichloroethylene 1, 1 -dichloroethylene 1,2-dichloropropane 1,3-dichloropropylene Ethylbenzene Methyl bromide Methyl chloride Methylene chloride 1,1,2,2 -tetrachloroethane Tetrachloroethylene Toluene 1,1,1 -trichloroethane 1,1,2 -trichloroethane Trichloroethylene Vinyl chloride Acid -extractable compounds: Page 7 of 11 Bis (2-chloroethyl) ether Bis (2-chloroisopropyl) ether Bis (2-ethylhexyl) phthalate 4-bromophenyl phenyl ether Butyl benzyl phthalate 2-chloronaphthalene 4-chlorophenyl phenyl ether Chrysene Di -n -butyl phthalate Di-n-octyl phthalate Dibenzo(a,h)anthracene 1,2 -dichlorobenzene 1,3 -dichlorobenzene 1,4 -dichlorobenzene 3,3-dichlorobenzidine Diethyl phthalate Mercury (EPA Method 1631 E) Nickel Selenium Silver Thaium Zinc Cyanide Total phenolic compounds Volatile organic compounds: Acrolein Acrylonitrile Benzene Bromoform Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-chloroethylvinyl ether Chloroform Dichlorobromomethane 1,1-dichloroethane 1,2-dichloroethane P -chloro -m -cresol 2 -chlorophenol 2,4-dichlorophenol 2,4 -dimethylphenol 4,6-dinitro-o-cresol 2,4-dinitrophenol 2-nitrophenol 4-nitrophenol Pentachlorophenol Phenol 2,4,6 -trichlorophenol Base -neutral compounds: Acenaphthene Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene 3,4 benzofluoranthene Benzo(ghi)perylene Benzo(k)fluoranthene Bis (2-chloroethoxy) methane Permit No. NCO021717 Dimethyl phthalate 2,4-dinitrotoluene 2,6-dinitrotoluene 1,2-diphenylhydrazine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclo-pentadiene Hexachloroethane Indeno(1,2,3-cd)pyrene Isophorone Naphthalene Nitrobenzene N-nitrosodi-n-propylamine N-nitrosodimethylamine N-nitrosodiphenylamine Phenanthrene Pyrene 1,2,4-trichlorobenzene Reporting. Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the Director) by December 31St of each designated sampling year. The report shall be submitted to the following address: NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.210)(5). The US EPA requires four (4) toxicity tests for a test organism other than the test species currently required in this permit. The multiple species tests should be conducted either quarterly for a 12 -month period prior to submittal of the permit renewal application, or four tests performed at least annually in the four and one half year period prior to the application. These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. The multiple species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1623 Mail Service Center Raleigh, North Carolina 27699-1623 Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting Unit. Page 8of11 Permit No. N00021717 A. (5) MERCURY MINIMIZATION PLAN (MMP) [G.S. 143-215.1(b)] The permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall be developed within 180 days of the NPDES Permit Effective Date, and shall be available for inspection on-site. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance (http://portal.ncdenr.or web/wq/swp/ns/npdes, under Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors and goals for reduction. Results shall be summarized and submitted with the next permit renewal. Performance of the Mercury Minimization Plan will meet the requirements of the TMDL (Total Maximum Daily Load) for mercury approved by USEPA on October 12, 2012, unless and until a Waste Load Allocation specific to this facility is developed and this NPDES permit is amended to require further actions to address the Waste Load Allocation. A. (6) NUTRIENT REOPENER FOR HIGH ROCK LAKE [G.S. 143-215.1(b)] This permit may be reopened and modified to implement nutrient requirements in accordance with any future TMDL and/or nutrient management strategy for High Rock Lake. A. (7) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS [G.S. 143-215.1(b)] Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such submittals, then permittees must submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these regulations will be adopted and is beginning implementation in late 2013. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits): • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E. (5.) Monitoring Reports 1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)l Beginning no later than 270 days from the effective date of this permit, the permittee shall begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state Page 9of11 Permit No. N00021717 electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DEQ / DWR / Information Processing Unit ATTENTION: Central Files / eDMR 1617 Mail Service Center Raleigh, North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in writing to the Division for written approval at least sixty (60) days prior to the date the facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the permittee re -applies for and is granted a new temporary waiver by the Division. Information on eDMR and application for a temporary waiver from the NPDES electronic reporting requirements is found on the following web page: http://portal.ncdenr.org/web/wq/adminibogCipu/edmr Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. 2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1 All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I 1.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: htip://portal.ncdenr.org/web/wq/adminibog/ipu/edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: Page 10 of 11 Permit No. NCO021717 "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. " 3. Records Retention [Supplements Section D. (6.)] The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.41 ]. Page 11 of 11